The apeE Gene of Salmonella enterica Serovar Typhimurium Is Induced by Phosphate Limitation and Regulated by phoBR

Abstract
Mutations in apeR , a regulatory locus of the outer membrane esterase apeE from Salmonella enterica serovar Typhimurium, were shown to be alleles of the pstSCAB-phoU high-affinity phosphate transport operon. Expression of apeE was induced by phosphate limitation, and this induction required the phoBR phosphate regulatory system.